Dual Scale Sea Water Salinity Refractometer Meter Salimeter 0~10% Measurement Tool for Aquarium Seawater Monitoring Features: 1.ItisaSalinityRefractometer.Comeswithahardcase,dropper,screwdriverandcleaningcloth. 2.Easytofocus&calibrateandveryconvenienttouse. 3.Quickandeasytouse. 4.WithBuilt-inATC(AutomaticTemperatureCompensation)from10~30degreeCelsius. 5.Durableandbulittolastlong 1.Lightweightandportable,easytocarry. 2.Equippedwithscalemeasurementwhichprovidesdirectreading 3.Designedfortestingtheconcentrationofsaltwaterandbrine,idealforaquariums,marinemonitoringandqualitycontrolinresearchandclinicallaboratories. Specification: Color:black MeasuringRange:0~10% Density:1.000-1.070g/cm3 ATCRange:10~30C(50~86F) Size:195x50x40mm Weight:105g PackageInformation: PackageSize:205x83x53mm/8.07x3.27x2.09in PackageWeight:245g/8.64oz GeneralBoxPackage PackageIncluded: 1xRefractometer 1xMiniscrewdriver 1xPipette 1xCarryBox 1xCloth 1xUserManual